Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Beidellite from
Magnet Cove, Hot Spring County, Arkansas, USA


Locality type:Census-designated Place
Classification
Species:Beidellite
Formula:(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Beidellite data
Locality Data:Click here to view Magnet Cove, Hot Spring County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:87807
Long-form Identifier:1:3:87807:6
GUID (UUID V4):0
References
Shockley, Woodland G. (1976) Mineral Collecting in Magnet Cove, Arkansas. Rocks & Minerals, 51 (10) 495-507 doi:10.1080/00357529.1976.11762161
 
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